August weather forecastChiba, Japan
August
Weather in August
August experiences a climax in both temperature and heat, with maximum temperatures spiking at 29.8°C (85.6°F). Surprisingly, despite the high temperature, the month experiences a decrease in average humidity, dropping to 79% compared to the previous month. August does experience a significant reduction in rainfall, recording only 62mm (2.44") over 15 days. Summer enthusiasts can anticipate longer times for swimming, sunbathing, and beach activities due to extended daylight hours. It's the paramount time for family outings and festivals in Chiba.Temperature
The highest temperatures in Chiba are recorded in August, with averages reaching a high of 29.8°C (85.6°F) and a low of 24.8°C (76.6°F).Heat index
The heat index for August is evaluated at a very hot 37°C (98.6°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Always consider that heat index estimations are for light winds and places in the shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in August in Chiba, Japan, is 79%.Rainfall
In August, the rain falls for 15 days. Throughout August, 62mm (2.44") of precipitation is accumulated. Throughout the year, in Chiba, there are 162.9 rainfall days, and 921mm (36.26") of precipitation is accumulated.Snowfall
In Chiba, snow does not fall in March through December.Sea temperature
August is the month with the warmest seawater, with an average sea temperature of 25.3°C (77.5°F).Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.
Daylight
In Chiba, the average length of the day in August is 13h and 29min.On the first day of August in Chiba, sunrise is at 04:47 and sunset at 18:43. On the last day of the month, sunrise is at 05:11 and sunset at 18:08 JST.
Sunshine
The month with the most sunshine is August, with an average of 10.2h of sunshine.UV index
In Chiba, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 in August interprets into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Attention! UV strength is notably upped by the reflection of sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Chiba, Japan
- Average high temperature in August: 29.8°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in August: 24.8°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in August
Chiba, Japan
- Average pressure in August: 1010.1mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in August
Chiba, Japan
- Average wind speed in August: 14km/h
The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity in August
Chiba, Japan
- Average humidity in August: 79%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (62%).
Average rainfall in August
Chiba, Japan
- Average rainfall in August: 62mm
The wettest month (with the highest rainfall) is October (124mm).
The driest month (with the least rainfall) is January (41mm).
Average rainfall days in August
Chiba, Japan
- Average rainfall days in August: 15 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in August
Chiba, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in August
Chiba, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in August
Chiba, Japan
- Average sea temperature in August: 25.3°C
The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (14.4°C).
Average daylight in August /
Average sunshine in August
Chiba, Japan
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 10h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in August
Chiba, Japan
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Chiba, Japan
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in August
Chiba, Japan
- Average cloud cover in August: 35
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 32).
Average visibility in August
Chiba, Japan
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).





